theming

Because sometimes asterisk is not good enough to distinguish a required field from others - or you want it to look custom.
theme_form_required_marker() was added in D7.

Add this to your template.php: 

/**

Sometimes one needs to alter how post content is output. For example on the home page one might want to display images within the post with a link to the full post on a separate page instead of  a Flickr source or larger version of the uploaded image. 

Overriding links within post content